C2

C2 or a derivative may refer to:

Biology

* C2 domain, a protein structural domain
* C2 regulatory sequence for the insulin gene
* Apolipoprotein C2, a human apolipoprotein
* ATC code C02, a section of the Anatomical Therapeutic Chemical Classification System
* In human anatomy, C2 may refer to:
** Cervical vertebra 2, one of the cervical vertebrae of the vertebral column
** Cervical spinal nerve 2
* Complement component 2
* Vitamin C2, a name sometimes used for Choline
* C02, Malignant neoplasm of other and unspecified parts of tongue ICD-10 code

Codes or abbreviations

C2 may be a code or abbreviation for:
* C² Aquarii and C² Centauri, two stars
* C2 (Code Geass), an anime character
* C2 Education, a leading K-12 tutoring and test preparation provider
* C2 error, a read error of a compact disc
* C2 explosive, a form of plastic explosive
* C2 (protocol), a 1985 Commodore file transfer protocol
* C2 pylon, a type of high voltage pylon
* C2 (radio), a Welsh language music show on BBC Radio Cymru
* C2 radio class, a class in FM broadcasting in America
* BRDC C2 Championship, a short lived sports car racing series which ran from 1988 to 1990
* Nimrod NRA/C2, a 1982 Group C racing carand also :
* C2, an international standard paper size defined in ISO 216 (458×648 mm)
* C2, a level in the Common European Framework of Reference for Languages
* Cryptomeria cipher, a cipher used in digital rights management
* Command and control (military)
* Air Luxor IATA airline code
* a military specification which called for a two-seat fighter aircraft
* Code for the Skilled Working Class, according to the NRS social grade
* UEFA Cup Winners' Cup, a former footballing competition, so named because it was the secondary UEFA competition. Mainly used in non-English speaking countries.
** Supercoppa di Lega Serie C2 in Italy

Drinks

* C2 (green tea drink), a Universal Robina Philippines manufactured drink
* Carling C2, an alcoholic drink, with 2% alcohol, hence its name
* Coca-Cola C2, a soft drink launched by The Coca-Cola Company in 2004

Transport, vehicles, ships, planes

* C2 class Melbourne tram
* C-2 Greyhound, The Grumman cargo aircraft of the United States Navy
* ACAZ C.2, a Belgian prototype fighter aircraft of the 1920s
* AEG C.II, a German World War II armed reconnaissance aircraft
* AGO C.II, a German reconnaissance biplane of World War I
* Bavarian C II (Ostbahn), a 1862 German steam locomotive
* Bavarian C II.1, a 1857 German steam locomotive
* Bavarian C II.2, a 1861 German steam locomotive
* Cierva C.2, a 1921 Spanish experimental autogyro
* Citroën C2, a car produced by Citroën in 2004
* DFW C.II, a WWI German reconnaissance aircraft
* DSER Class C2, a Dublin and South Eastern Railway
* GNR Class C2, a Briish 4-4-2 steam locomotive
* Hansa-Brandenburg C.II, a
* HMS C2, a British C class submarine of the Royal Navy
* LFG Roland C.II, a 1915 advanced German reconnaissance aircraft
* London Buses route C2
* LB&SCR C2 class, a 1893 British 0-6-0 steam locomotive
* LVG C.II, a 1910s German two-seat reconnaissance biplane
* Saf-T-Liner C2, a school bus built by Thomas Built Buses
* Saturn C-2, a 1960 conceptual American launch vehicle
* Spyker C2, an old car model
* Type C2 ship all-purpose cargo ships
* USS C-2 (SS-13), a C-class submarine of the United States Navy
* USS Charleston (C-2), a protected cruiser of the United States Navy
* President E. Quirino Avenue, a road in Metro Manilla , Philippines